<?php

class CommentController extends Controller
{
	/**
	 * @var string the default layout for the views. Defaults to '//layouts/column2', meaning
	 * using two-column layout. See 'protected/views/layouts/column2.php'.
	 */
	public $layout='//layouts/column2';

	/**
	 * @return array action filters
	 */
	public function filters()
	{
		return array(
			'accessControl', // perform access control for CRUD operations
		);
	}

	/**
	 * Specifies the access control rules.
	 * This method is used by the 'accessControl' filter.
	 * @return array access control rules
	 */
	public function accessRules()
	{
		return array(
			array('allow',  // allow all users to perform 'index' and 'view' actions
				'actions'=>array('index','view'),
				'users'=>array('*'),
			),
			array('allow', // allow authenticated user to perform 'create' and 'update' actions
				'actions'=>array('create','update'),
				'users'=>array('@'),
			),
			array('allow', // allow admin user to perform 'admin' and 'delete' actions
				'actions'=>array('admin','delete'),
				'users'=>array('admin'),
			),
			array('deny',  // deny all users
				'users'=>array('*'),
			),
		);
	}

	/**
	 * Displays a particular model.
	 * @param integer $id the ID of the model to be displayed
	 */
	public function actionView($id)
	{
		$this->render('view',array(
			'model'=>$this->loadModel($id),
		));
	}

	/**
	 * Creates a new model.
	 * If creation is successful, the browser will be redirected to the 'view' page.
	 */
	public function actionCreate()
	{
		$model=new Comment;

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['Comment']))
		{
			$model->attributes=$_POST['Comment'];
			if($model->save())
				$this->redirect(array('view','id'=>$model->comment_id));
		}

		$this->render('create',array(
			'model'=>$model,
		));
	}

	/**
	 * Updates a particular model.
	 * If update is successful, the browser will be redirected to the 'view' page.
	 * @param integer $id the ID of the model to be updated
	 */
	public function actionUpdate($id)
	{
		$model=$this->loadModel($id);

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['Comment']))
		{
			$model->attributes=$_POST['Comment'];
			if($model->save())
				$this->redirect(array('view','id'=>$model->comment_id));
		}

		$this->render('update',array(
			'model'=>$model,
		));
	}

	/**
	 * Deletes a particular model.
	 * If deletion is successful, the browser will be redirected to the 'admin' page.
	 * @param integer $id the ID of the model to be deleted
	 */
	public function actionDelete($id)
	{
		if(Yii::app()->request->isPostRequest)
		{
			// we only allow deletion via POST request
			$this->loadModel($id)->delete();

			// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
			if(!isset($_GET['ajax']))
				$this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
		}
		else
			throw new CHttpException(400,'Invalid request. Please do not repeat this request again.');
	}

	/**
	 * Lists all models.
	 */
	public function actionIndex()
	{
		// get param
		$oid   = Yii::app()->request->getParam('oid');
		$pid   = Yii::app()->request->getParam('pid');
		$ctype = Yii::app()->request->getParam('ctype');
		//$_POST['Comment'] = Yii::app()->request->getParam('Comment');
		
		if (($pid == null) or ($ctype == null) or ($oid == null))
			throw new CHttpException(404, 'Param is not enough');
			
		$comment = new Comment();
		if (isset($_POST['action'])) {
			$this->del();
		}
		if (isset($_POST['Comment'])) {
			// Save data
			$comment->attributes = $_POST['Comment'];
			$comment->comment_project_id = $pid;
			$comment->comment_object_id = $oid;
			$comment->comment_posted_date = new CDbExpression('NOW()');
			$comment->comment_posted_by_user_id = Yii::app()->user->id;
			$comment->comment_object_type = $ctype;
			$comment->save();
		}
		
		$dataProvider=new CActiveDataProvider('Comment',array(
			'criteria'=>array(
			 	'condition'=>"comment_object_type='$ctype' and comment_project_id=$pid and comment_object_id = '$oid'",
				'order'=>'comment_posted_date ASC',
			),
			'pagination'=>array(
        		'pageSize'=>5,
    		),
		));
		
		// load to last page comment
		if (isset($_POST['Comment']) or isset($_POST['action'])) {
			$pager = $dataProvider->pagination;
			$pager->itemCount = $dataProvider->totalItemCount;
			$pager->currentPage = $pager->pageCount;
			$this->renderPartial(
				'listcomment',array(
					'dataProvider'=>$dataProvider,
					'comment'=>$comment,
				),
				false,
				true
			);
			return;
		}
		
		$comment = new Comment();
		$this->renderPartial(
			'index',array(
				'dataProvider'=>$dataProvider,
				'comment'=>$comment
			),
			false,
			true
		);
	}
	
	public function del() {
		$cid   = Yii::app()->request->getPost('cid');
		$comment = Comment::model()->findByPk($cid);
		if (!$comment or !$comment->delete())
			throw new CHttpException('404',"Can't delete comment");
	}

	/**
	 * Manages all models.
	 */
	public function actionAdmin()
	{
		$model=new Comment('search');
		$model->unsetAttributes();  // clear any default values
		if(isset($_GET['Comment']))
			$model->attributes=$_GET['Comment'];

		$this->render('admin',array(
			'model'=>$model,
		));
	}

	/**
	 * Returns the data model based on the primary key given in the GET variable.
	 * If the data model is not found, an HTTP exception will be raised.
	 * @param integer the ID of the model to be loaded
	 */
	public function loadModel($id)
	{
		$model=Comment::model()->findByPk((int)$id);
		if($model===null)
			throw new CHttpException(404,'The requested page does not exist.');
		return $model;
	}

	/**
	 * Performs the AJAX validation.
	 * @param CModel the model to be validated
	 */
	protected function performAjaxValidation($model)
	{
		if(isset($_POST['ajax']) && $_POST['ajax']==='comment-form')
		{
			echo CActiveForm::validate($model);
			Yii::app()->end();
		}
	}
}
